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公开(公告)号：US10050405B2
公开(公告)日：2018-08-14
申请号：US15132797
申请日：2016-04-19
IPC分类号： H01S3/10 , H01S3/00 , H01S3/13 , H01S3/08 , H01S3/081 , H01S3/106 , H01S5/14 , H01S5/0687 , H01S5/00
摘要： A device may include a first photodetector to generate a first current based on an optical power of an optical beam. The device may include a beam splitter to split a portion of the optical beam into a first beam and a second beam. The device may include a wavelength filter to filter the first beam and the second beam. The wavelength filter may filter the second beam differently than the first beam based on a difference between an optical path length of the first beam and an optical path length of the second beam through the wavelength filter. The device may include second and third photodetectors to respectively receive, after the wavelength filter, the first beam and the second beam and to generate respective second currents.
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公开(公告)号：US09998253B2
公开(公告)日：2018-06-12
申请号：US15265490
申请日：2016-09-14
发明人： Paul Colbourne
CPC分类号： H04J14/0212 , G02B6/14 , G02B6/3512 , G02B6/3548 , G02B6/356 , H04B10/2581 , H04J14/04 , H04Q11/0005 , H04Q11/0066 , H04Q2011/0016 , H04Q2011/0026
摘要： A wavelength selective switch (WSS) may include a front-end unit that includes an input few-mode fiber (FMF) providing an input optical signal including multiple wavelengths. The multiple wavelengths may each have N modes. The front-end unit may include two or more output few-mode fibers (FMFs), and a side that has a 1×N port for each of the input FMF and the two or more output FMFs. Each of the 1×N ports may be single mode in a wavelength dispersion dimension and N-mode in a switching dimension. The WSS may include a switching element to receive the input optical signal from the front-end unit, switch each of the multiple wavelengths of the input optical signal to form one or more output optical signals, and direct each of the one or more output optical signals to a corresponding 1×N port of the front-end unit.
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公开(公告)号：US09964668B2
公开(公告)日：2018-05-08
申请号：US15495265
申请日：2017-04-24
发明人： John Michael Miller , Joel Milgram , Karen Denise Hendrix , Michael O'Leary , Hery Djie , Lu Tian , Paul Colbourne
CPC分类号： G02B1/12 , G02B1/11 , G02B5/1809 , G02B5/3083 , G02B27/286 , G03F7/0005
摘要： A zoned waveplate has a series of transversely stacked birefringent zones alternating with non-birefringent zones. The birefringent and non-birefringent zones are integrally formed upon an AR-coated face of a single substrate by patterning the AR coated face of the substrate with zero-order sub-wavelength form-birefringent gratings configured to have a target retardance. The layer structure of the AR coating is designed to provide the target birefringence in the patterned zones and the reflection suppression.
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公开(公告)号：US09885830B2
公开(公告)日：2018-02-06
申请号：US15443601
申请日：2017-02-27
发明人： John M. Heaton , Oleg Bouevitch
CPC分类号： G02B6/131 , G02B6/122 , G02B6/125 , G02B6/14 , G02B6/4204 , G02B2006/12104 , G02B2006/12123 , G02B2006/12142 , G02B2006/12147
摘要： A semiconductor waveguide optical device and a method of manufacturing of a semiconductor optical device are disclosed. The semiconductor waveguide optical device may include a gradient index waveguide for mode conversion and/or vertical translation of optical modes of step-index waveguides, which may be disposed on or over a same substrate as the gradient index waveguide. The gradient index waveguide may be epitaxially grown.
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公开(公告)号：US09874698B2
公开(公告)日：2018-01-23
申请号：US15152270
申请日：2016-05-11
发明人： Barthelemy Fondeur , Jinxi Shen , Leonid Frenkel , Yimin Hua , David R. Walker , Yu Zhang , Vlatko Milinkovic
CPC分类号： G02B6/29353 , G02B6/29355 , G02B6/29395 , G02F1/0147 , G02F1/21 , G02F1/225 , G02F2001/212 , G02F2201/16 , G02F2203/055 , H04B10/2504 , H04J14/02 , H04Q11/0005 , H04Q2011/0009 , H04Q2011/0018
摘要： A tunable PLC optical filter having sequentially connected thermally tunable Mach-Zehnder (MZ) interferometers is described. The cascade of MZ interferometers, each having a free spectral ranges matching ITU frequency grid spacing, are tuned so as to have a common passband centered on the frequency of the signal being selected, while having at least one of the stopbands centered on any other ITU frequency. Any other optical channel that may be present at any other ITU frequency is suppressed as a result. Another MZ interferometer in series with the cascade of interferometers including an asymmetric or variable coupler, is tuned to have low transmission at the center frequency of the selected optical channel.
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公开(公告)号：US09866315B2
公开(公告)日：2018-01-09
申请号：US15136675
申请日：2016-04-22
发明人： Barrie Keyworth , John Michael Miller , Andrew Parks , Dan Burke , Peter David Roorda , Brandon C. Collings , Brian Smith
IPC分类号： H04J14/02 , H04B10/032 , H04Q11/00
CPC分类号： H04B10/032 , H04J14/0212 , H04J14/0213 , H04J14/0217 , H04Q11/0005 , H04Q11/0062 , H04Q2011/0026 , H04Q2011/003 , H04Q2011/0037 , H04Q2011/0081
摘要： A method may include receiving, by a switching engine, an optical signal. The optical signal may carry a super-channel that includes a plurality of sub-carriers to be directed toward respective output ports. The switching engine may have a plurality of regions of pixels on which respective sub-carriers, of the plurality of sub-carriers, are incident. The method may include applying, by the switching engine, respective single beam steering gratings to first, overlapping, areas of the plurality of regions of pixels. The method may include applying, by the switching engine, one or more respective pluralities of beam steering gratings to second, overlapping areas of the plurality of regions of pixels. The method may include directing, based on the single beam steering gratings and the one or more pluralities of beam steering gratings, parts of the optical signal toward the respective output ports.
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公开(公告)号：US09706273B2
公开(公告)日：2017-07-11
申请号：US14608228
申请日：2015-01-29
发明人： Thomas Haslam , David Coomber , Daniel Doliska , Michael Scott Pegrum , Marc-Antoine Boutin , Brian Sungwan Kim
CPC分类号： H04Q11/0005 , H04J14/0201 , H04J14/0204 , H04J14/0206 , H04J14/0212 , H04Q2011/0037
摘要： The invention relates to a method for auto-configuring a wavelength selective switch (WSS) device having an output port and a plurality of input ports and coupled to a WSS controller. When connected to a WDM optical network, the WSS controller is programmed to utilize one or more optical channel monitors (OCM) coupled to the input and/or output ports to detect which of the wavelengths are present at the input ports. Wavelengths that are not detected on any input port are blocked by the WSS. Any wavelength detected as present at one and only one input port is switched by the WSS to the output port. If a wavelength is detected at two or more input ports, it is either blocked by the WSS at each of the input ports until user intervention, or is blocked at all but one of the input ports as defined by assigned port priorities.
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公开(公告)号：US09703099B2
公开(公告)日：2017-07-11
申请号：US15003514
申请日：2016-01-21
发明人： Xiuquan Ma , Dmitriy Panasenko , Martin H. Muendel
CPC分类号： G02B27/0025 , G02B3/0087 , G02B6/25 , G02B6/255 , G02B13/0095 , G02B27/30
摘要： An aberration corrector and a method to reducing a spherical aberration are disclosed. The aberration corrector has a radial, rotationally symmetric variation of refractive index including a term varying in proportion to a fourth degree of a distance from the optical axis. Since the spherical aberration causes a wavefront deviation proportional to the fourth degree of distance from the optical axis, the spherical aberration can be reduced by the aberration corrector when its thickness causes the exact amount of the phase delay corresponding to the wavefront deviation, but with an opposite sign.
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公开(公告)号：US09575260B2
公开(公告)日：2017-02-21
申请号：US15087364
申请日：2016-03-31
发明人： Barrie Keyworth , Paul Colbourne
CPC分类号： G02B6/3594 , G02B6/272 , G02B6/2766 , G02B6/29305 , G02B6/32 , G02B6/3512 , G02B6/3514 , G02B6/3518 , G02B6/3534 , G02B6/3546 , G02B6/3556 , G02B6/356
摘要： The number of wavelength selective switch (WSS) units in a WSS device can be doubled by using polarization properties of optical beams propagating through the WSS device. Beams from different WSS units are orthogonally polarized at the front end, propagated through collimator, wavelength dispersing element, and a focusing element, and impinge on a polarizing beamsplitter, which directs sub-beams at different polarizations to different directing elements of a director array. A polarization diversity configuration at the back end can be used to reduce polarization dependent loss.
摘要翻译： 通过使用通过WSS器件传播的光束的偏振特性，WSS器件中的波长选择开关（WSS）单元的数量可以加倍。 来自不同WSS单元的光束在前端正交极化，通过准直器，波长分散元件和聚焦元件传播，并且撞击在偏振分束器上，偏振分束器将不同偏振的子光束引导到导向器阵列的不同导向元件。 后端的极化分集结构可用于减少偏振相关损耗。
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公开(公告)号：US09563073B2
公开(公告)日：2017-02-07
申请号：US14316997
申请日：2014-06-27
发明人： Wei Xiong , Michael C. Larson , Zhaoming Li , Fenhong Zhou
CPC分类号： G02F1/093 , G02B6/2746 , G02B6/32 , G02B6/4209 , G02B6/4286
摘要： An integrated and compact multifunctional optical isolator (i.e., a combined splitter, isolator, and spot-size converter), which is suitable for use in a TOSA, includes input optics including a first polarizer, a Faraday rotator, and a second polarizer. The input optics include a wedge having a partially reflective coating disposed on a first face thereof. The input beam is incident on the first face at a non-normal angle of incidence such light passing through the wedge is refracted to a second face of the wedge, which is tilted relative to the first face by a predetermined wedge angle. At least one of the non-normal angle of incidence and the predetermined wedge angle is determined dependence upon a refractive index of the wedge material and a target anamorphic magnification of the input beam of light.
摘要翻译： 适用于TOSA的集成且紧凑的多功能光隔离器（即，组合分离器，隔离器和点尺寸转换器）包括包括第一偏振器，法拉第转子和第二偏振器的输入光学器件。 输入光学器件包括具有设置在其第一面上的部分反射涂层的楔形物。 输入光束以非正常入射角入射在第一面上，通过楔形物的光折射到相对于第一面倾斜预定楔角的楔形物的第二面。 根据楔形材料的折射率和输入光束的目标变形倍率来确定非正常入射角和预定楔角中的至少一个。
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